I do not know why everyone is so convinced

So I have got these paddles bought because a buddy had borrowed me once his and then also what necessarily must have.
But unfortunately there was no longer his model.
So I chose this one. However, I'm having trouble putting on but I hope that is certainly with a little practice better.
What bothers me are these rubber bands, because the keep with me just not really. There are indeed various methods of attachment and I guess a band over the entire back of the hand would be there already the most sense because you can easily slip inside. Will test even 1-2 times the paddle